lecellieb



(No Model.) 2 Sheets-Sheet l.

L. R. LEGELLIER.

, LOOK.

No. 531,685. Patentetl Jan. 1, 1895.

(No Model.) 2 SheetsSheet 2.

L. R. LEGELLIER.

LOOK.

No. 581,685. Patented Jan. 1,1895.

UNITED STATES PATENT Er ca.

LEON RAPHAEL LEGELLIER, OF VILLEDIEU, FRANCE.

LOCK.

SPECIFICATION forming part of Letters Patent No. 531,685, dated January1, 1895.

Application filed May 20,1893- Sen'al No. 174,986. (No model.) Patentedin France November 16, 1892, No. 225,702.

Tamil whom it may concern.-

Be it known that I, Lnon RAPHAEL LECEL- LIER, of the city of Villedieu,Manche, France, have invented Improvements in Looks for Railway-Carriageand other Doors, (for which I have obtained Letters Patentin France forfifteen. years, dated November 16, 1892, No. 225,702,) of which thefollowing is a full, clear, and exact description.

This invention relates to an improved system of automatic safety lockwhich is more particularlyintended for the doors of railway carriages,but which may be also employed with equal advantage in other situations.

The advantages of this improved lock are its great simplicity ofconstruction and action, absolute security being at same time insured bythe automatic locking of the inside handle which is so mounted that thedoor can only be opened from the inside by a movement which cannotaccidentally be produccd.

The invention is illustrated in the accompanying drawings, forming partof this specification, as applied to a railway carriage door.

Figure 1 shows a face view of the lock with its handle as seen from theinterior of the compartment. Fig. 2 represents a similar view of thelock, on a larger scale, with the cover plate removed for the purpose ofshowing the mechanism in the locked position. Fig. 3 is a horizontalsection on line 12, Fig. 2. Fig. 4 is a part-sectional elevation takenin a-plane at right angles to Fig. 2, also with the fastening in thelocked position. Fig. 5 shows the inside handle in the position to whichit must be moved before the door can be opened from the interior of thecompartment. Fig. 6 is an end view and horizontal section, showing theapplication to the locking bolt of a spring catch. Fig. 7 is an insideface view, and Fig. 8 a plan, of the lock with a slightly modifiedarrangement of inside handle. Fig. 9 is a horizontal section, showingthe position of the inside handle when the door is closed, and Fig. 10is a similar section showing the position to which said handle must bemoved to enable the door to be opened from the interior of thecompartment. Fig. 11 shows the clutch connecting the handle to the lockspindle. Figs. 12, 13 and 14, show respectively an inside face view,plan, and horizontal section, of a modified construction of the insidehandle locking arrangement. Fig. 15 is a sectional view of a modifiedarran gement for operating the indicator tablet.

My improved lock may be applied to existing carriage doors withoutinvolving any alteration and it occupies a very small space. The lockcomprises a bolt or provided with laterally-projecting studs d d, fittedto slide in guide slots 0 formed in the sides of the lock casing 12. Thebolt a is thrown, by the act of closing the door, when it comes oppositethe catch box, for which purpose the bolt has a certain amount oflateral play in its casing 12 (as clearly shown in Fig. 6) and isnotched so as to present a shoulder a, which when the bolt is retractedis forced by a spring f at the opposite side of the bolt into engagementwith the cover plate a through which the bolt slides. The bolt has aprojection a on its face which when the door is shut into its frame, asshown in Fig. 3, strikes a plate projecting from the catch box 9, so asto disengage the shoulder a. from the plate e and allow the bolt to bethrown by its spring h, as in Figs. 2 and 3.

The bolt a may be retracted by turning the outside handle 2' whichoperates the follower 7.; on the squared spindle Z. The opening of thedoor from the outside is thus eliected in the ordinary way, but in orderto open it from the inside the handle i must be specially operated. Inits normal position the handle is prevented from turning by theengagement of a clutch in, formed on the boss of the handle, with itsfixed counterpart m, as shown in Fig. 4., but this locking may beefiected by any suitable form of clutch. The part m is shown as beingpressed into engagement with the part m by a spring n about the squaredend I of spindle and inclosed Within the cap 0.

To open the door by the inside handle 11 it is necessany to disconnect mfrom m, thereby compressing the spring 72 and bringing the handle on tothe squared end of the spindle to enable it to operate the follower k.The action of drawing back the handle by simultaneously pressing on thecap 0 is more particularly facilitated by employing the form of handlerepresented in Fig. 8 which prevents all risk of the accidental openingof the door and consequently adords absolute security.

Figs. 7 to 11 show another way in which the lever or other handle ismounted onthe spindle. The boss of the handle has a socket a formingpart of a clutch whereof the other part Z is on the spindle Z, the depthof the clutch engagement being suiiicient to admit of drawing back thehandle, as hereinafter described without disengaging it from thespindle. The handle is locked by alug i on the boss of the handle whichengages in a notch 'v on the lock. casing when the door is closed. Theends of the spiral spring n are received in annular recesses in the bossof the handle and the cap screwed on the end of spindle Z.

To open the door from the inside the handle is drawn back sufficientlyto disengage lug i from its notch, the cap serving as aful crum ifdesired. The door can then be opened by pressing down the handle in theordinary way. The handle may also be mounted as shown in Figs. 12, 13and 14.

The handle 71 is pivoted on pin :cin ears or carried by the boss whichis loose upon the spindle Z. To the end of the spindle is screwed andcottered a nut 0 provided with a recess y and having a lug y The pivotedend of the handle 11' has a crosshead 2' 11 the end 1' being normallypressed into engagement by means of a springf with anotch r in thecollar z of the lock casing. To open the door, the handle t" is firstdrawn back to disengage the lug i from its notch and at same time causethe lug i to enter recess 1 and act on the lug 1 when by pressing downthe handle its boss in will carry round with it the nut 0' and spindleZ. The handle t" is made of such form as to permit of bringing the handas near as possible to the center of motion and of pressing the thumb onthe cap or not of the spindle as a fulcrum in drawing the handle back.

The lock is provided with a sliding tablet indicating whether the dooris open or shut, the means of operating which may be of the ordinarywell-known or other kind. In the example shown in Figs. 2, 3 and 4, thetablet consists of a plate 1) fitted to slide up and down for thepurpose of exposing the indication open or shut at an aperture made inthe front of a casing q serving as a guide for the tablet. The weight ofthe tablet serves to effect its downward movement, while its upwardmovement is produced by a finger r which lifts a plate 5 from whichprojects a pin t supporting the tablet p which is notched on its bottomedge to receive it. In Fig. 15, the tablet p is shown as raised by alifter t mounted on the collar Z of spindle Z.

I claillkl. A safety lock for railway carriage and other doors, havingthe outside handle rigidly attached to the spindle, the handle at theinner side of the door normally out of engagement with said spindle andlocked by a springactuated clutch from which it can only be released andthrown into operative connection with the spindle, by first drawing thesaid handle away from the door, whereby the outer handle can be used tooperate the bolt without operating the inner handle, substantially asspecified.

2. In a safety lock, the combination of a bolt a, a spring h actuatingsaid bolt 0,, shoulder (1, formed on the bolt, a lock casing, a spring facting laterally upon the bolt and serving to engage the shoulder athereof with the lock casing, a projection a on the bolt adapted tostrike a projection on the catch plate when the door is closed, therebyforcing the bolt laterallyagainst the pressure of the spring, freeingthe shoulder a from the lock casing and permitting the bolt to be thrownoutward by its spring it into engagement with the catch plate,substantially as described.

The foregoing specification of my improvements in looks for railwaycarriage and other doors signed by me this 14th day of April, 1893.

LEON RAPHAEL LECELLIER.

lVitnesses:

ALBERT MOREAUE, JOSEPH GHATEL.

